Page:Journal of botany, British and foreign, Volume 34 (1896).djvu/444

 412 DR. DONALDSON SMITH's ACANTHACE^. tubo medio inserta, anteriora longiora et antheris bilocularibus instructa, loculi parallelis ellipticis, posteriora cum antheris uni- locularibus. Pollen ellipticum, '' spangen" -pollen. Stylus fili- formis ; stigma capitatum apice sulcatum. Ovula in utroque loculo gemina superposita ; funiculus induratus unciformis. Frutex ramis validis, ramulis incano-tomentosis, et foliis parvis lanceolatis, ellip- tico-lanceolatis vel ellipticis, in partibus juvenilibus glandulifera. Flores mediocres in spicis brevibus paucifloris aggregati. Bractese inferiores foliacesB, superiores sepalosae ; bracteolas angustae. Africa orientalis equatorialis. Species 1. Genus novum e tribo Jiisticiece, subtribo Baiieriea. Lindaiiea strikingly recalls Barleria in its 4-partite calyx with narrow lateral and large broad median segments, the anterior of which is bidentate ; and also in the SBstivation of its corolla, and the number and arrangement of its stamens. It differs, however, in its markedly bilabiate corolla, a character which recalls Lopho- stachys and Volkensiophyton, and also in the form of its pollen. The latter has three broad ribs united at the poles, and six narrow ribs which are separated from the broader only by a very narrow furrow which stops considerably below the two poles. The surface of the ribs is corrugated, that of the narrower much more regularly and conspicuously. A pore-bearing protuberance occupies the centre of each of the diamond-shaped areas bounded by the narrow ribs. " Spangen" -pollen has not yet been recorded in the subtribe BarleriecB, but Lindau (Engler & Prantl, Pfianzenfam. iv. 36, 306) admits, though doubtfully, Forsythiopsis into his section Buelliem, though its pollen shows the same difference from the general form. I have named the genus after Dr. Gustav Lindau, who has done much work on the order during the last few years. L. speciosa, species unica. Foliis obtusis breviter petiolatis, Isete viridibus, glanduliferis ; bracteis superioribus ellipticis velut sepalis pubescentibus et glanduliferis, 3-nerviis ; bracteolis anguste lineari-lanceolatis vel subulatis ; calyce ad basin partito, sepalo postico plus minus elliptico vel elliptico-obovato, acuto, 3-nervio, antico elliptico-obovato vel anguste obovato, bifido, 2-nervio, lateralibus lineari- subulatis, acutis, uninerviis; corolla cseruleo- purpurea externe pubescente, labio postico angusto arcuato, antice latiore, cum. lobo medio minore ; fructu, vix matura, oblanceolata apice breviter rostrata. (Plate 362.) Hab. Low-lying country a little to the east of the Eiver Shebele, Dec. 30th, 1894. The plant is apparently of considerable size ; the single specimen consists of a stout woody branch 8 mm. in diameter, with a grey bark, branching irregularly and bearing at the top a number of rather crowded branches, the ultimate ramifications of which are short densely-leaved shoots. The branches bear a thick greyish tomentum, the ends of the shoots like the young leaves, the bracts and the sepals bearing more or less numerous short capitate glandular hairs. The largest leaves, which are lanceolate or elliptically lanceolate, have a stalk about 2 mm. long, and a blade 15 by 5-7 mm. ; the leaves are generally smaller, about 12 by 4 mm.